If you are going to call an angle, I would recomend Michael, he has gotten me out of a few jams myself, and has never needed an offering of any kind for his help. If you feel like you are threatened by a supernatural being, just simply say: "Oh, Michael, Archangel of the South, please protect me." This is just an example, its best to come up with something personal, or something for your situation
Stabbing and shooting shadows is generally a bad idea. Shooting in particular.
However, I am curious how your dog reacted.
I have seen such spirits before, and they are often aspects of nature rather than any sort of more intense higher/lower spirit. Leave it alone and it will likely leave you alone. If you are actively shielding yourself constantly in positive energy and white light, that can also accidentally attract attention that you don't exactly want from such things.
Where you first saw it, was it near an empty lot? Had large amounts of forest been cleared away? Or had there been other such drastic change in the environment or surroundings?
The hell hound is pure black with red eyes. You didnt say the eye color so i'm assuming its not that.. maybe a spirit of a past pet of yours, or a familiar, or possibly a shadow
My dog just kinda stopped and looked at it. Today when I was walking my dog she kept stopping to turn around and look at something and when I looked I swear I could feel it back there. I feel I should mention this isn't the first time I've seen them, When I was a kid I lived in Glastonbury Ct and behind my house was a forest that ran into a swamp. I used to to love playing and running barefoot through the forest and swamp, and I used to see them all the time and at night they'd hang out around the houses in our naighborhood. I stopped seeing them after we moved to NC and its been about eight years and now they've started showing up again.
Some more information, they don't like direct light I have seen them during the day but only when it's overcast and only in the forest and swamp. They only seem to enter populated areas at night. One more thing, I have seen one of them in NC before, it was before we moved to a different part of NC. By our apartment was a dirt road that led to a transfomer station in the woods. I was walking down it at dusk and was about to come to the station when I look up and about 10 in front of me one of them is just standing there like it was waiting. I stop walking and just stare at it when it rises up and it dosen't look like a animal anymore, now it looks like a person. Then it just vanishs like the others. We moved a few months later, that was a about 4 years ago. This is the first time I've told anyone about this or wrote it down but now that I have I'm starting to see a pattern and I feel like that's not a good thing.
I have seen these things near swampy forests and the like before, too.
It is my belief that they are often an aspect of the forest; nature spirits that are generally harmless. Like wild animals, they may appear aggressive or otherwise alarming. Treat them with respect and be cautious, as you would with any wild animal.
